Background surface thresholding
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United States of America Patent
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Jun 10, 2003
Grant Date -
N/A
app pub date -
Oct 26, 1999
filing date -
Oct 26, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A thresholding technique for generating a background image of a pixmap image is described. For one embodiment of the present invention, background image is used to generate a background threshold surface for thresholding a pixmap image. For another embodiment of the present invention, the background image is used to normalize the background of the pixmap image. In yet another embodiment of the present invention, the background image is used as input for other image processing algorithms such as extracting features from a grey-scale image for character recognition.
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